[Milsurplus] Johnson Matchbox.. 250-23 , coil details

Bill Cromwell wrcromwell at gmail.com
Fri Jan 29 19:20:54 EST 2016


Hi Pete,

First..modifying a matchbox to "accommodate" the WARC bands is as easy 
as relabeling with a dymo label maker, a crayon, etc. I have two of 
those beauties and they already 'accommodate' the WARC bands. We just 
have to know where those bands fit in among the band switch labels that 
are already there. Then try the band on either side to get your match.

Do you have the manual? I think you can find one on BAMA. There is 
something about moving the tap for your receiver for best results - 
depending on whether your receiver uses "50 ohm" coax or Hi-Z wires. 
That doesn't affect  the balanced tuner section, though. Are you sure 
what taps you are looking at? I am not sure what my RX tap is set for 
but my receivers are happy enough. I have never moved the taps in either 
of my Matchboxes.

Yes..pardon me for not removing all those screws, knobs, etc.

73,

Bill  KU8H


On 01/29/2016 05:54 PM, Pete Williams wrote:
> G'day list.....  I have a    Matchbox  250-23  which  I suspect  may 
> have been 'got at'  to  try  mods to  WARC  band setting.
> However, I want to restore to  the original  configuration ,  I'd 
> appreciate knowing where the  tap points were  on the  coil each side 
> of  centre .. As  I  look at the  coil now  that I have  taken it out  
> connection points  don't  seem to be symmetrical  on each  side .
> Maybe someone has  take the  trouble to  document this   but  to 
> expect  anyone to take  their  box  apart in  answer  is a bit  too 
> much to  expect.... But  thanks for  any  info.
> Cheers
> Pete  VK3IZ
>
>



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